Power control of electronic apparatus in response to surrounding

Details Power control of electronic apparatus in response to surrounding Power control of electronic apparatus in response to surrounding

1984-11-23

1986-04-29

Hix, L. T.

Photocopying

Projection printing and copying cameras

Illumination systems or details

307117, 250214AL, H01H 4724, G03B 2772

Patent

active

045853398

ABSTRACT:
A power controller for an electronic apparatus including an electrophotographic copying machine is provided for automatically prohibiting power supply to parts of the apparatus in response to the reduction of a light-shining amount, e.g., a decrease in the light surrounding the apparatus. The power controller includes a photosensitive element, a comparator, a delay circuit, a gate, and a relay. The photosensitive element serves to provide a voltage in accordance with the surrounding brightness.

REFERENCES:
patent: 3529214 (1970-09-01), Corn
patent: 3961183 (1976-06-01), Dubot et al.
patent: 4139802 (1979-02-01), Dubot et al.
patent: 4198563 (1980-04-01), Elssner
patent: 4449074 (1984-05-01), Luchaco

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